Im not sure if there is a higher rate available in a combination fertilizer product but for the last 2 years we have used 19-0-7 with the .43% barricade. im sure you can mix it stronger if you're doing liquid pre-emergent. The .43% rate works great here in Michigan, basically had no crabgrass for the last 2 years, except a few isolated extreme cases where the lawns were scalped to the dirt literally and never got a drop of water for the whole summer. Also areas where extensive physical damage was done to the turf from construction, mowers, etc. had crabgrass but there is nothing that can be done in that situation. Never had any problems with adverse affects on the lawn, still had the healthiest and best looking lawns on every block. Only problem is that you better prepare to be yellow any day you apply it either in the granular or liquid form. Washed my spreader every single day and after 20 minutes the next day it looked like a giant bumblebee driving across the lawn. If your spraying from a hose your pants will be yellow forever. All-in-all i would recommend the .43% rate.